Finding the Fourth Proportional to 2,320.38, 3,478.14 and 1,086.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.38 : 3,478.14 = 1,086.75 : x
2. Step 2: Convert to fraction form
   2,320.38/3,478.14 = 1,086.75/x
3. Step 3: Cross multiply
   2,320.38x = 3,478.14 × 1,086.75
4. Step 4: Simplify right side
   2,320.38x = 3,779,868.65
5. Step 5: Solve for x
   x = 3,779,868.65/2,320.38
6. Step 6: Final answer
   x = 1,628.99